Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures
In order to investigate the effect of energy density in selective laser melting (SLM) forming on the properties of porous bone scaffolds made of 316L stainless steel, the mechanism of different construction energy densities on the residual stress and microstructure of cubic porous bone scaffolds was...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | International Journal for Simulation and Multidisciplinary Design Optimization |
| Subjects: | |
| Online Access: | https://www.ijsmdo.org/articles/smdo/full_html/2022/01/smdo220032/smdo220032.html |
| _version_ | 1828122170803355648 |
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| author | Zhang Sen Xu Shubo Zheng Wei Han Juanjuan |
| author_facet | Zhang Sen Xu Shubo Zheng Wei Han Juanjuan |
| author_sort | Zhang Sen |
| collection | DOAJ |
| description | In order to investigate the effect of energy density in selective laser melting (SLM) forming on the properties of porous bone scaffolds made of 316L stainless steel, the mechanism of different construction energy densities on the residual stress and microstructure of cubic porous bone scaffolds was investigated by combining experiments and finite element analysis. The results showed that many defects were formed in the scaffolds when too high or too low energy densities were used to form the porous bone scaffolds. In terms of microstructure, inappropriate energy densities caused some grains to appear coarse and dispersed, which directly led to a reduction in the corrosion resistance of the scaffolds. Most importantly, the stress and temperature field changes in the melt pool during the SLM forming process were obtained through finite element calculations and analysis, and it was found that the residual stress in the scaffolds was proportional to the energy density. After a comprehensive study of the finite element analysis results and experimental characterization, the optimum energy density for constructing cubic porous bone scaffolds with ideal defects and residual stress in the porous bone scaffolds was obtained. |
| first_indexed | 2024-04-11T14:31:02Z |
| format | Article |
| id | doaj.art-8cf8e5f9907b4ab7b1d05b1319608a84 |
| institution | Directory Open Access Journal |
| issn | 1779-6288 |
| language | English |
| last_indexed | 2024-04-11T14:31:02Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | International Journal for Simulation and Multidisciplinary Design Optimization |
| spelling | doaj.art-8cf8e5f9907b4ab7b1d05b1319608a842022-12-22T04:18:37ZengEDP SciencesInternational Journal for Simulation and Multidisciplinary Design Optimization1779-62882022-01-01132310.1051/smdo/2022016smdo220032Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structuresZhang Sen0Xu Shubo1https://orcid.org/0000-0003-3219-8464Zheng Wei2Han Juanjuan3School of Materials Science and Engineering, Shandong Jianzhu UniversitySchool of Materials Science and Engineering, Shandong Jianzhu UniversitySchool of Materials Science and Engineering, Shandong Jianzhu UniversitySchool of Materials Science and Engineering, Shandong Jianzhu UniversityIn order to investigate the effect of energy density in selective laser melting (SLM) forming on the properties of porous bone scaffolds made of 316L stainless steel, the mechanism of different construction energy densities on the residual stress and microstructure of cubic porous bone scaffolds was investigated by combining experiments and finite element analysis. The results showed that many defects were formed in the scaffolds when too high or too low energy densities were used to form the porous bone scaffolds. In terms of microstructure, inappropriate energy densities caused some grains to appear coarse and dispersed, which directly led to a reduction in the corrosion resistance of the scaffolds. Most importantly, the stress and temperature field changes in the melt pool during the SLM forming process were obtained through finite element calculations and analysis, and it was found that the residual stress in the scaffolds was proportional to the energy density. After a comprehensive study of the finite element analysis results and experimental characterization, the optimum energy density for constructing cubic porous bone scaffolds with ideal defects and residual stress in the porous bone scaffolds was obtained.https://www.ijsmdo.org/articles/smdo/full_html/2022/01/smdo220032/smdo220032.htmlporous bone scaffoldsselected laser meltingresidual stressmicrostructurefinite element analysis |
| spellingShingle | Zhang Sen Xu Shubo Zheng Wei Han Juanjuan Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures International Journal for Simulation and Multidisciplinary Design Optimization porous bone scaffolds selected laser melting residual stress microstructure finite element analysis |
| title | Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| title_full | Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| title_fullStr | Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| title_full_unstemmed | Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| title_short | Study of the effect of SLM energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| title_sort | study of the effect of slm energy density on residual stress and microstructure of porous bone scaffolds in cubic structures |
| topic | porous bone scaffolds selected laser melting residual stress microstructure finite element analysis |
| url | https://www.ijsmdo.org/articles/smdo/full_html/2022/01/smdo220032/smdo220032.html |
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